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A028948 An "extremely strange sequence": a(n+1) = [ A*a(n)+B ]/p^r, where p^r is the highest power of p dividing [ A*a(n)+B ] and p=2, A=4.001, B=1.2. 2
0, 1, 5, 21, 85, 341, 1365, 2731, 10927, 5465, 10933, 1367, 2735, 10943, 5473, 10949, 1369, 2739, 10959, 5481, 10965, 1371, 2743, 10975, 5489, 10981, 1373, 2747, 10991, 5497, 10997, 1375, 2751, 11007, 5505, 11013, 1377, 2755, 11023 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..38.

FORMULA

a(n+1) = A000265(floor(A*a(n)+B)). - M. F. Hasler, Aug 07 2018

PROG

(PARI) vector(50, i, if(i>1, t=(t*4001+1200)\1000; t>>=valuation(t, 2), t=0)) \\ M. F. Hasler, Aug 07 2018

CROSSREFS

Cf. A000265.

Sequence in context: A247001 A271157 A255451 * A084241 A002450 A187063

Adjacent sequences:  A028945 A028946 A028947 * A028949 A028950 A028951

KEYWORD

nonn,easy

AUTHOR

Yasutoshi Kohmoto

EXTENSIONS

Name corrected and initial 0 added by M. F. Hasler, Aug 07 2018

STATUS

approved

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Last modified December 1 22:12 EST 2021. Contains 349435 sequences. (Running on oeis4.)