A249044 Composite self-numbers.

9, 20, 42, 64, 75, 86, 108, 110, 121, 132, 143, 154, 165, 176, 187, 198, 209, 222, 244, 255, 266, 288, 299, 310, 312, 323, 334, 345, 356, 378, 400, 411, 413, 424, 435, 446, 468, 490, 501, 512, 514, 525, 536, 558, 580, 591, 602, 615, 626, 637, 648, 670, 681, 692, 703, 714, 716, 738, 749, 760, 771, 782

Offset: 1

Author

N. J. A. Sloane, Oct 30 2014

Keywords

• nonn
• base

References

• D. R. Kaprekar, The Mathematics of the New Self Numbers, Privately Printed, 311 Devlali Camp, Devlali, India, 1963.

Links

• Reinhard Zumkeller, Table of n, a(n) for n = 1..10000
• D. R. Kaprekar, The Mathematics of the New Self Numbers [annotated and scanned]

Crossrefs

Cf. A003052, A006378, A171671.

Cf. A002808, A010051, A062028.

Programs

Haskell

a249044 n = a249044_list !! (n-1)
a249044_list = filter ((== 0) . a010051') $ tail a003052_list
-- Reinhard Zumkeller, Oct 31 2014