A233759 Bisection of A006950 (the odd part).

1, 2, 4, 7, 13, 21, 35, 55, 86, 130, 196, 287, 420, 602, 858, 1206, 1687, 2331, 3206, 4368, 5922, 7967, 10670, 14193, 18803, 24766, 32490, 42411, 55159, 71416, 92152, 118434, 151725, 193676, 246491, 312677, 395537, 498852, 627509, 787171, 985043, 1229494

Offset

1,2

Comments

See Zaletel-Mong paper, page 14, FIG. 11: C2a is A233758, C2b is this sequence, C2c is A015128.

Links

Table of n, a(n) for n=1..42.

M. P. Zaletel and R. S. K. Mong, Exact Matrix Product States for Quantum Hall Wave Functions, arXiv preprint arXiv:1208.4862 [cond-mat.str-el] (2012), 14 (C2b).

Mathematica

b[n_, i_] := b[n, i] = If[n == 0, 1, If[i < 1, 0, b[n, i - 1] + If[i > n, 0, b[n - i, i - Mod[i, 2]]]]];
a[n_] := b[2 n - 1, 2 n - 1];
Table[a[n], {n, 1, 42}] (* Jean-François Alcover, Dec 11 2018, after Alois P. Heinz in A006950 *)

Crossrefs

Cf. A000009, A015128, A006950, A069910, A069911, A195825, A195836, A211970, A233758.

Sequence in context: A369520 A266650 A205183 * A090752 A051058 A332578

Adjacent sequences: A233756 A233757 A233758 * A233760 A233761 A233762

Keyword

nonn

Author

Omar E. Pol, Jan 11 2014

Status

approved