A370119 Numbers whose arithmetic derivative is a multiple of 9.

0, 1, 14, 27, 50, 54, 65, 68, 77, 81, 86, 108, 122, 135, 155, 158, 160, 162, 189, 194, 196, 203, 208, 212, 216, 230, 243, 270, 275, 284, 297, 299, 302, 323, 324, 329, 335, 351, 356, 374, 378, 405, 410, 428, 432, 446, 459, 473, 482, 486, 496, 512, 513, 515, 533, 540, 554, 567, 581, 590, 594, 621, 626, 629, 648, 662

Offset: 1

Author

Antti Karttunen, Feb 10 2024

Keywords

• nonn

Crossrefs

Intersection of A327863 and A370123.

Positions of multiples of 3 in A369669.

Cf. A003415, A370118 (characteristic function).

Programs

PARI

\\ See A370118.