A249184 A249183 seen as binary numbers.

1, 7, 27, 119, 427, 1799, 6939, 30583, 109227, 458759, 1769499, 7798903, 27984299, 117901063, 454761243, 2004318071, 7158278827, 30064771079, 115964117019, 511101108343, 1833951035819, 7726646167303, 29802778073883, 131352984844151, 469126392949419

Offset

0,2

Comments

Appears to be basically the same as A048711. - R. J. Mathar, Nov 16 2014

Links

Reinhard Zumkeller, Table of n, a(n) for n = 0..1000

Formula

a(n) = Sum_{k=0..2*n} (A249133(n,k)*2^k).

A007088(a(n)) = A249183(n).

A000120(a(n)) = A105321(n).

A023416(a(n)) = A249304(n).

Mathematica

a[n_] := FromDigits[Mod[Riffle[Binomial[n, Range[0, n]], Binomial[n - 1, Range[0, n - 1]]], 2], 2]; Array[a, 25, 0] (* Amiram Eldar, Jul 28 2023 *)

Prog

(Haskell)
a249184 = foldr (\b v -> 2 * v + b) 0 . a249133_row

Crossrefs

Cf. A249183 (binary), A249133, A007088, A001317, A000120, A023416, A105321, A249304.

Sequence in context: A255278 A294262 A048711 * A118101 A201380 A327623

Adjacent sequences: A249181 A249182 A249183 * A249185 A249186 A249187

Keyword

nonn

Author

Reinhard Zumkeller, Nov 14 2014

Status

approved