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A071987 225 written in base 15-n. 0
100, 121, 144, 169, 195, 225, 270, 341, 441, 1013, 1400, 3201, 22100, 11100001 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,1
COMMENTS
Interesting because the beginning is so close to a sequence of perfect squares to base ten. Only 195 is different; it would be 196 in a sequence of perfect squares.
LINKS
EXAMPLE
a(0) = 100 because we can write 225 = 100 (base 15).
MAPLE
seq((l-> parse(cat(seq(l[-i], i=1..nops(l)))))(convert(
225, base, 15-n)), n=0..13); # Alois P. Heinz, Mar 10 2020
MATHEMATICA
Array[FromDigits@ IntegerDigits[225, 15 - #] &, 14, 0] (* Michael De Vlieger, Mar 10 2020 *)
PROG
(PARI) a(n) = fromdigits(digits(225, 15-n));
vector(14, n, a(n-1)) \\ Michel Marcus, Mar 11 2020
CROSSREFS
Sequence in context: A352958 A328864 A143919 * A365820 A095633 A228103
KEYWORD
base,fini,full,nonn
AUTHOR
Philip R. Turner (Phil.Turner(AT)cern.ch), Jun 17 2002
EXTENSIONS
a(13) corrected by Alois P. Heinz, Mar 10 2020
STATUS
approved

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Last modified March 29 01:34 EDT 2024. Contains 371264 sequences. (Running on oeis4.)