0,4
M. L. Perez et al., eds., Smarandache Notions Journal
Cf. A019515.
Sequence in context: A129754 A103547 A064758 this_sequence A133515 A067424 A001538
Adjacent sequences: A030425 A030426 A030427 this_sequence A030429 A030430 A030431
nice,nonn
Felice Russo (felice.russo(AT)katamail.com)
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