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 A213542 a(n) = k AND k^k, where k=2*n+1, AND is the bitwise AND operator. 2
 1, 3, 5, 7, 9, 3, 13, 15, 17, 3, 5, 7, 25, 3, 13, 31, 33, 35, 5, 7, 41, 35, 13, 15, 49, 35, 37, 7, 57, 35, 45, 63, 65, 67, 69, 7, 9, 3, 13, 15, 81, 67, 5, 7, 25, 3, 77, 31, 97, 35, 5, 7, 41, 99, 77, 15, 113, 35, 37, 7, 57, 99, 109, 127, 129, 131, 133, 7, 137, 131 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS Alois P. Heinz, Table of n, a(n) for n = 0..10000 MAPLE a:= proc(n) local i, k, m, r; k:= 2*n+1; m:= k &^ k mod (2^(1+ilog2(k))); r:= 0; for i from 0 while (m>0 or k>0) do r:= r +2^i* irem(m, 2, 'm') *irem(k, 2, 'k') od; r end: seq(a(n), n=0..100); # Alois P. Heinz, Jun 21 2012 MATHEMATICA Table[BitAnd[n, n^n], {n, 1, 141, 2}] (* Harvey P. Dale, Nov 26 2014 *) PROG (Python) print([k**k & k for k in range(1, 222, 2)]) CROSSREFS Cf. A213541. Sequence in context: A163125 A167047 A065271 * A029657 A122641 A140977 Adjacent sequences: A213539 A213540 A213541 * A213543 A213544 A213545 KEYWORD nonn,base,easy,look,less AUTHOR Alex Ratushnyak, Jun 14 2012 STATUS approved

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Last modified May 30 06:58 EDT 2024. Contains 372961 sequences. (Running on oeis4.)