000			01764nam a2200133Ia 4500
999			_c5161 _d5161
003			OSt
005			20240520141147.0
008			160930s9999 xx 000 0 und d
100			_aRao, Devinani Jagan Mohan
245			_aNumbers Personalities Patterns
260			_aNew Delhi _bNeelkamal Pub. Pvt.
500			_aSymbols used in this Book A.P Arithmetic Progression G.P Geometric Progression H.P Harmonic Progression (a, b) = 1 a is relatively prime to b or g.c.d of a and b is 1 (a, b) c g.c.d of a and b is c alb a divides b Bn ath Bernoulli number ab(mod c) ab is divisible by c d (n) Number of positive divisors of n Hn nth hex number wth hexagonal number Pn nth pentagonal number Pn ath Pell number Hepn with heptagonal number Nn ath nonagonal number Ocin nth octagonal number Tein wth tetrahedral number Sqpn ith square pyramidal number nth triangular number Tn nth Fibonacci number Fn Fermat number 22" + 1 fn nth Lucas number Ln Mersenne number 2" - 1 ath pyramidal number (n) sum of the digits of n spen) sum of the digits of prime factors (n) sum of the divisors of n σ(π) sum of the unitary divisors of n sum of the bi-unitary divisors of n p(n) number of partitions of n M(p) multiple of p Kn number formed with digit k repeated n times R number formed with n repeated units P(n) product of all divisors of n (n) GSK number of positive integers not exceeding that are relatively prime to n Pseudo Fibonacci Number Legendre symbol number of combinations of n things taken at a time and is equal to n!/(nr)! r! n! 1-2-3-... (n-1) (л) In 111 1! 2! 3! 1--+- ++(-1) n! 2.4.6. n, if n is even 1-3-5 n, if n is odd difference between m and n pi. 3. 14159... ...
942			_cBK _2ddc