A249043 a(1) = 42; a(n+1) = a(n) + sum of decimal digits of a(n).

42, 48, 60, 66, 78, 93, 105, 111, 114, 120, 123, 129, 141, 147, 159, 174, 186, 201, 204, 210, 213, 219, 231, 237, 249, 264, 276, 291, 303, 309, 321, 327, 339, 354, 366, 381, 393, 408, 420, 426, 438, 453, 465, 480, 492, 507, 519, 534, 546, 561, 573, 588, 609, 624, 636

Offset

1,1

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]

Index entries for Colombian or self numbers and related sequences

Formula

a(n+1) = A062028(a(n)). - Reinhard Zumkeller, Oct 31 2014

Prog

(Haskell)
a249043 n = a249043_list !! (n-1)
a249043_list = iterate a062028 42
-- Reinhard Zumkeller, Oct 31 2014

Crossrefs

Cf. A004207, A016052, A007618, A006507, A016052, A036228.

Cf. A007953, A062028.

Sequence in context: A095485 A276185 A124189 * A063998 A255513 A186456

Adjacent sequences: A249040 A249041 A249042 * A249044 A249045 A249046

Keyword

easy,nonn,base

Author

N. J. A. Sloane, Oct 30 2014

Status

approved