A373648 Integers k such that there are i groups of order k+i up to isomorphism, for i=1,2.

2, 4, 12, 32, 36, 60, 72, 84, 132, 140, 144, 156, 176, 192, 212, 216, 276, 312, 344, 392, 396, 420, 444, 456, 480, 500, 536, 540, 552, 560, 564, 612, 660, 672, 696, 704, 716, 732, 744, 756, 792, 816, 864, 876, 884, 912, 932, 956, 972, 996, 1040, 1092, 1140, 1152, 1172, 1200

Offset: 1

Author

Robin Jones, Jun 12 2024

Keywords

• nonn

Comments

All the terms are even. - Robin Jones, Apr 18 2025

Examples

			2 is a term since there is 1 group of order 3 up to isomorphism, 2 of order 4.
		

Links

• Robin Jones, Table of n, a(n) for n = 1..500

Crossrefs

Equals A296023 - 1.

Cf. A373649 (i=1,2,3), A373650 (i=1,2,3,4), A381335 (i=1,2,3,4,5).

Subsequence of A003277 - 1.