A277701 Positions of ones in A264977; positions of twos in A277330.

1, 5, 13, 29, 41, 61, 85, 125, 173, 209, 253, 281, 313, 349, 421, 509, 565, 629, 701, 845, 929, 1021, 1133, 1261, 1405, 1693, 1861, 2045, 2269, 2525, 2665, 2813, 3121, 3313, 3389, 3725, 3905, 4093, 4541, 4841, 5053, 5209, 5257, 5333, 5629, 5993, 6245, 6629, 6781, 7453, 7813, 8189, 8537, 9085, 9593, 9685, 9905, 10109, 10421, 10517, 10669, 10921

Offset: 1

Author

Antti Karttunen, Oct 27 2016

Keywords

• nonn

Comments

Positions in A260443 of terms that are twice square (terms in A001105, although not all of them are present in A260443).

Links

• Antti Karttunen, Table of n, a(n) for n = 1..720

Crossrefs

Row 1 of A277710.

Cf. A001105, A260443, A264977, A277330.

Cf. also A277712, A277713.

Formula

A277712(n) = 2*a(n) for all n >= 1.