A381659 - OEIS

%I #7 Mar 04 2025 07:33:01

%S 1,4,11,21,31,69,93,96,174,222,263,433,529,633,671,732,1006,1298,1388,

%T 1519,1688,1813,2018,2220,2507,2788,3601,3949,4155,4498,4612,4792,

%U 5018,5476,5864,6165,6391,6611,8402,9173,9527,10388,10727,11379,11834,12045,12684,13116,13552,14038,14974,15340,15988,16301,16994,18426,19514,20372,21366,22953

%N Index where n first appears in A381658.

%Y Cf. A381658, A381660, A092482, A381597, A229037.

%K nonn,new

%O 1,2

%A _Scott R. Shannon_, Mar 04 2025