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A116348 Numbers k such that k*(k+1) gives the concatenation of two numbers m and m+9. 3
10, 90, 3678, 6322, 8788, 48745, 51255, 87619, 3762556, 6237444, 9217102, 3266298276, 3520463766, 6479536234, 6733701724, 8063694650, 8317860140, 4689524709430934476, 5310475290569065524, 7416797436703661749 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
CROSSREFS
Sequence in context: A243106 A046706 A337867 * A043088 A175710 A226389
KEYWORD
nonn,base
AUTHOR
Giovanni Resta, Feb 06 2006
STATUS
approved

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Last modified June 16 08:45 EDT 2024. Contains 373424 sequences. (Running on oeis4.)