A045805 - OEIS

A045805

5-ish numbers (end in 51, 57, 93, 99).

51, 57, 93, 99, 151, 157, 193, 199, 251, 257, 293, 299, 351, 357, 393, 399, 451, 457, 493, 499, 551, 557, 593, 599, 651, 657, 693, 699, 751, 757, 793, 799, 851, 857, 893, 899, 951, 957, 993, 999, 1051, 1057, 1093, 1099, 1151, 1157, 1193, 1199, 1251, 1257

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OFFSET

1,1

LINKS

Reinhard Zumkeller, Table of n, a(n) for n = 1..1000

FORMULA

Empirical G.f.: x*(51+6*x+36*x^2+6*x^3+x^4)/(1-x-x^4+x^5). [Colin Barker, Jan 23 2012]

MATHEMATICA

Select[Range[50, 1500], MemberQ[{51, 57, 93, 99}, Mod[#, 100]]&] (* Harvey P. Dale, Nov 14 2022 *)

PROG

(Haskell)

import Data.List (findIndices)