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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: A088477 A328864 A143919 * A095633 A228103 A331543 Adjacent sequences:  A071984 A071985 A071986 * A071988 A071989 A071990 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 July 30 07:55 EDT 2021. Contains 346348 sequences. (Running on oeis4.)