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

Author

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

Keywords

• nonn
• base

Links

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

Crossrefs

Cf. A045784, A045855.

Programs

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