A272673 Take list of squares that start with 1 (A045784) and omit the leading 1 and any leading zeros from what is left; if the number was a power of 10, replace it with 0.

0, 6, 0, 21, 44, 69, 96, 24, 89, 156, 225, 296, 369, 444, 521, 600, 681, 764, 849, 936, 0, 201, 404, 609, 816, 1025, 1236, 1449, 1664, 1881, 2100, 2321, 2544, 2769, 2996, 3225, 3456, 3689, 3924, 4161, 4400, 4641, 4884, 5129, 5376, 5625, 5876

Offset

1,2

Links

Chai Wah Wu, Table of n, a(n) for n = 1..10000

Prog

(Python)
A272673_list = [0] + [int(str(m**2)[1:]) if sum(int(d) for d in str(m**2)[1:]) != 1 else 0 for m in range(4, 10**3) if str(m**2)[0] == '1'] # Chai Wah Wu, May 21 2016

Crossrefs

Cf. A045784, A045855.

Sequence in context: A219540 A292497 A082731 * A167357 A064381 A062254

Adjacent sequences: A272670 A272671 A272672 * A272674 A272675 A272676

Keyword

nonn,base

Author

Nathan Fox, Brooke Logan, and N. J. A. Sloane, May 21 2016

Status

approved