A206000 Inverse Euler transform of 2 - A195981.

1, 0, 0, 1, 2, 6, 15, 40, 110, 303, 853, 2419, 6950, 20110, 58677, 172267, 508825, 1510472, 4504978, 13491155, 40554394, 122318519, 370075767, 1122830663, 3415591776, 10414918850, 31827804005, 97464863424, 299032201886, 919094334980, 2829593105751, 8724968220133, 26942517476931, 83312297368383

Offset: 0

Author

N. J. A. Sloane, Feb 02 2012, Feb 03 2012

Keywords

• nonn

Comments

The sequence is conjectured to be nonnegative and convex.

Links

• N. J. A. Sloane, Transforms
• A. D. Sokal, The leading root of the partial theta function, arXiv preprint arXiv:1106.1003, 2011. Adv. Math. 229 (2012), no. 5, 2603-2621.

Crossrefs

Cf. A195980, A195981, A205999.