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A107976 First differences give the same sequence written as a string of individual digits. 5
7, 14, 15, 19, 20, 25, 26, 35, 37, 37, 39, 44, 46, 52, 55, 60, 63, 70, 73, 80, 83, 92, 96, 100, 104, 110, 115, 117, 122, 127, 133, 133, 139, 142, 149, 149, 156, 159, 167, 167, 175, 178, 187, 189, 198, 204, 205, 205, 205, 206, 206, 210, 211, 212, 212, 213, 214 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Cf. A100787, A107974, A107975, A107976, A107977 for "seeds" 1, 3, 5, 7 and 9.

LINKS

Table of n, a(n) for n=1..57.

EXAMPLE

7.14.15.19.20.25.26.35.37.37... <- sequence

.7..1..4..1..5..1..9..2..0... <- first differences = the sequence's digits

MATHEMATICA

a[1] = 7; a[n_] := a[n] = a[n - 1] + Flatten[ Table[ IntegerDigits[ a[i]], {i, n - 1}]][[n - 1]]; Table[ a[n], {n, 60}] (* Robert G. Wilson v, Jun 15 2005 *)

CROSSREFS

Sequence in context: A232877 A232860 A232797 * A022557 A085335 A069137

Adjacent sequences:  A107973 A107974 A107975 * A107977 A107978 A107979

KEYWORD

base,easy,nonn

AUTHOR

Eric Angelini, Jun 12 2005

EXTENSIONS

Edited and extended by Robert G. Wilson v, Jun 15 2005

STATUS

approved

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Last modified November 20 08:12 EST 2017. Contains 294962 sequences.