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A055966
n + reversal of base 20 digits of n (written in base 10).
0
0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 21, 42, 63, 84, 105, 126, 147, 168, 189, 210, 231, 252, 273, 294, 315, 336, 357, 378, 399, 420, 42, 63, 84, 105, 126, 147, 168, 189, 210, 231, 252, 273, 294, 315, 336, 357, 378, 399, 420
OFFSET
0,2
COMMENTS
If n has an even number of base 20 digits then a(n) is a multiple of 21.
FORMULA
a(n) = n + A056963(n).
CROSSREFS
Cf. A056964.
Sequence in context: A195169 A338922 A055964 * A087113 A366846 A119432
KEYWORD
base,nonn
AUTHOR
Henry Bottomley, Jul 18 2000
STATUS
approved